Attachment for tailboard scrapers



Sept 20, 1938. G. s. SPREYER 2,130,974

ATTACHMENT FOR TAILBOARD SCRAPERS Filed Dec. 1, 1957 2 Sheets-Sheet 1 690719? JIJpYeyez'INVENTOR ATTORNEYS P 1938. G. s. SPREYER 2,130,974

ATTACHMENT FOR TAILBOARD SCRAPERS G'eorye arfi joreyeg'mvmmn ATTORNEYS Patented Sept. 20, 1938 'UNITED STATES PATENT OFFICE 4 Claims.

My invention relates to new and novel improvements in attachments for tailboard scrapers and has particular reference to the type illustrated and described in my Patent No. 1,343,097, dated June 8, 1920.

One of the principal objects of my invention is to provide an attachment for tailboard scrapers equipped with manually controlled means for effecting a dumping of the scraper to which it is attached.

Another object of my invention is to provide a device of the above described character which is simple in construction, durable in use, eflicient in operation and economical in manufacture.

Other objects and advantages will be apparent from the following description, appended claims and annexed drawings.

Referring'to the drawings wherein like reference characters designate like parts throughout the several views:

Fig. 1 is a side elevation of my invention illustrating .the same connected to a tailboard scraper.

Fig. 2 is a view similar to Figure 1 but illustrating my attachment in position for eflecting a dumping of the tailboard scraper.

Fig. 3 is a top plan View of my invention, the parts being in the position illustrated in Figure 1.

Fig. 4 is a detail sectional view taken on the line 4-4 of Figure 1.

In practicing my invention I provide a tailboard scraper attachment attached to a tailboard scraper of a type illustrated in my Patent No. 1,343,097, dated June 8, 1920 and which comprises a body I made of a centrally arranged board 2 and lower and upper boards 3, 4 which are arranged at an angle to the board 2 so that the body is hollow on its front side. On the rear side. of the body are end straps5 and intermediate straps 6 of iron or steel, the lower ends of which are curved forwardly and extend downwardly below the body as at I. The end straps extend at their upper ends above the body as at 8. The ends 9 of the body are also preferably made of wood, are shapedat their rear sides to fit the boards 2, 3 and 4 and have their front sides rounded as shown. Inner shoes l bear on the front sides or edges of the ends 9 and have their upper ends formed with bolt arms I I which extend through openings in the extensions 8 of the straps and are provided with clamping nuts I2. The lower ends of the shoes are bent and extended downwardly and forwardly as at I3. Outer shoes l4 bear against the front sides of the shoes I0, conform thereto in shape and are secured, together with the shoes I0, by bolts I5 which extend through bores in the ends 9 and boards 3, 4 and also through openings in the end straps 5 and are provided at their rear ends with clamping nuts I6. The inner shoes I 0 and the ends 9 are also secured by bolts H which extend therethrough and through the board 2 and the end straps 5 and are provided with nuts I8.

Straps I9 are arranged across the boards 2, 3 and 4 in the front side of the scraper body and together with the intermediate rear strap 6 are secured by bolts 20. The intermediate strap 6 and the front straps I9 have downwardly extended ends and a scraper blade 2| which, in practice, is made of plow steel is secured on the front side of the lower board 3, and between the same and the ends 9 and straps I9, the lower portion of the scraper blade extending between the downward extensions 1, I3 of the straps'5 and the inside shoe I0 and being secured thereto by rivets 22. Draft irons 23 are arranged on the inner sides of the ends 9 and have their upper, offset ends 24 secured to the ends 9 by means of bolts 25, said bolts also passing through plates 26 on the outer sides of the ends 9. The lower ends of the draft irons are bent downwardly and rearwardly and bear against the scraper blade and are secured thereto by rivets 21. Draft irons are each provided with a series of adjusting openings 28 which are arranged at different distances from the lower ends thereto. Draft chains 29 are provided with clevices 30 which clevices may be attached to the draft irons by bolts 3I. The said bolts may be inserted in any of the adjusting openings 28 so that the draft chains may be attached to the draft irons at any desired point according to the desired adjustment of the body of the scraper and the angle at which it is desired that the same shall work.

On the rear side of the scraper body at the center and upper portion thereof are a. pair of vertically arranged angle irons 32 which are appropriately spaced apart and are provided with adjusting openings 33.

A tailboard 34, which trails behind the body of the scraper, is provided at its front end, on the underside, with a pair of hinge plates 35 hingely connected to the body I as at 36. On the upper side of the tailboard are a pair of angle irons 31 which are arranged longitudinally and in spaced relation and are provided with adjusting openings 38. A brace rod 39 has its ends turned downwardly and provided with eyes or openings and arranged within the spaces of the angle irons 32, 31 and said angle iron is secured at any desecured thereto sired adjustment by a bolt 39a which may pass through any of the openings 38 and a bolt 40 which may pass through any of the openings 33. Hence, the angle between the body of the scraper and tailboard may vary and the tailboard and body scraper may be secured at any desired angle. A handle 4| is provided at the rear end of the tailboard, on its upper side, and a steel shoe 42 is provided on the lower side, the handle and steel shoe being secured by suitable bolts. The handle is for the purpose of providing an auxiliary means for dumping the body 5.

In order to secure my attachment to the tail:

the length of the tailboard and secured to the lower face 'adboard 34, I provide, intermediate of jacent the sides thereof, a pair of oppositely disposed angle irons 43 provided with adjusting openings 44. A pair of oppositely disposed'fr ont and rear yokes 45 and 46 respectively, are piv irons 43 as at 41.

otally connected to the angle Eachof the yokes comprise spaced arms embracing the sides of the tailboard 34 andhave right angularly disposed end sections connected together by means of bolts and nuts 48. Said arms, adjacent the connected end sections and including said sections, are formed with a plurality of openings d8 whereby the yokes may be adjusted longitudinally and perpendicularly relative to each other. The arms of the yoke 45, at the yoked end thereof, are inflected; downwardly and secured together by a transverse bar 55) for engaging the surface of the ground as hereinafter are described. The arms of the yoke 45, at the yoked end thereof, are integrally formed with a' transverse bar .5! and an intermediate cross bar 52 is having an eye bolt 53 secured thereon for'accom'modating one end of a spring 54. The opposite end of said spring is attached to an eye bolt 55 secured to the tailboard adjacent, the rear end thereof. The spring 54 normally maintains the yokes in retracted positions on the tailboard as illustrated in Figure l. Pivotally mounted on the upper face of the tailboard and intermediate of the eye bolt 55 and handle M is a latch having an arm engaging section 56 and an operating section 51 formed integral therewith. The outer end of the section 51 is fashioned with an eye through which is connected an operating cable 58.

When the scraper body is being operated over the ground for scraping and leveling the surface thereof, the tailboard is disposed in the rear thereof and at a slight angle relative to the surface of the ground. In this position the transverse bar 5! of the yoke 45 lies in engagement with the upper ,face of the tailboard and the arm engaging section 5'6 of the latch is disposed thereunder within the recess formed in the tailboard, the spring 54 coacting to maintain the yokes in retracted position relative to the tail board as clearly illustrated in Figure l.

' When it is desired to dump the body I, pullis exerted upon the cable58 causing the latch member topivot and raise the transverse bar 5! which in turn serves to pivot the yokes about the bolts 41 thereby projecting the bar downwardly into engagement with the ground. In this position,

continued movement of the scraper body causes the yoke to effect a pivoting of the tailboard in an upward direction thereby effecting a dumping of the scraper body, as illustrated in Figure 2.

From the foregoing it will be apparent that the yokes 45 and 46 may be adjusted relative to each other to effect a quick or slow dumping action by the tailboard and that the yokes may be adjusted on the angle irons 43 in a direction to permit heavy loads contained in the body to be dumped at a slower speed than that required for dumping light loads.

What I claim is:

1. A device of the character described, comprising, incom-bination, a scraper having a tailboard, a latch mounted on said tailboard, and a pair of oppositely disposed yokes pivoted tosaid tailboard, one yoke having an end member for engagement with the surface of the ground whereby to pivot said tailboard to dumping position, the other-yoke having an end member engageable by said latch in a manner whereby said latch will actuate said yokes to ground engaging positionfor effecting a dumping of said. scraper.

2. A device of the character described, comprising, in combination, a scraper having a tailboard, a latch mounted on' said tai1board,.a pair of oppositely disposed yokes pivoted to said tailboard, one yoke havingan end. member for engagement with the surface of the ground whereby to pivot said tailboard to dumping position, the other yoke having an end member ehgageable by said latch in a manner whereby said latch will actuate said yokes to ground. engaging posi-' tion for effecting a diunping of said scraper, and resilient means connected to said tailboard and one of said yokes for normally maintaining said yokes in retracted position relative to said tailboard.

'3. A device of the character described, comprising, in combination, a scraper having a tailboard, a latch mounted on said tailboard, and a pair of oppositely disposed yokes adjustable relative to each other pivoted to said tailboard, one yoke having an end member for engagement with the surface of the ground whereby to pivot said tailboard to dumping position, the other yoke having an end member engageable by said latch in a manner whereby said latch will actuate said yokes to ground engaging position for effecting a dumping of said scraper.

4. A device of the character described, comprising, in combination, a scraper'having a tailboard, .a latch mounted on said tailboard, a pair of oppositely disposed yokes adjustable relative to each other pivoted to said tailboard, one yoke having an end member for. engagement with the surface of the ground whereby to pivot said tailboard to dumping position, the other yoke having an end member engageable by saidlatch in a manner whereby said latch will actuate said yokes to ground engaging position for effectinga dumping of said scraper, and resilient .means connected to said tailboard and one of said yokes for normally maintaining said yokes in retracted position relative to said tailboard.

' GEORGE SWAIN SPREYER. 

